Login

Join for Free!
118285 members


i want information about choromosomes

Debate and discussion of any biological questions not pertaining to a particular topic.

Moderator: BioTeam

i want information about choromosomes

Postby sabbi » Sun Feb 14, 2010 9:24 am

human body have millions of cells,each having 46 choromosomes. Some cells become specialized to some tissue.Now if we want to do some changes in body by genetic engeneering(e.g. we insert insulin making gene in body) which cell is to be selected. and if we do genetic engeneering in one cell how all body cells start making insulin?????
sabbi
Garter
Garter
 
Posts: 1
Joined: Sun Feb 14, 2010 9:13 am

Postby JackBean » Sun Feb 14, 2010 10:36 am

Well, that depends, whether you want to do temporal or permanent transformation.
If temporal, than you should transform cells, which are supposed to express the gene (you probably won't transform muscles with gene for insulin;)
If permanent, than you have to transform germ cells and develop whole organism, which should be whole transformed.
This applies for multicellular organisms, but you will probably want to transform some one-cellular organism for mass-production of e.g. insulin.
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5678
Joined: Mon Sep 14, 2009 7:12 pm

Postby jwalin » Tue Feb 16, 2010 12:00 pm

in this post i am going to talk about multicellular organisms
you will want to create the transformation in the b cells of the islets of langerhaan
this can be done using bacterias or viruses

if the change is done in the germ line then the particular organism isn't affected but its future generations are

you could also use liposomes but again that's very hard


to make the change in germ line will be easier but still its considerably hard

if you make use of bacterial cells or vrius there are high chances of infection
and another thing you could insert a transformed cell in the area and it would divide over a period of time and give good results

another thing you could merge the transformed cell with hybridoma cells but there's a risk of cancer. and that would need to be treated

another is idea i ain't sure of its feasibility but is you remove all the B cells of islets of langerhaans and put a few transformed one

the absence of other will make the body initiate its division
Last edited by JackBean on Tue Feb 16, 2010 4:36 pm, edited 1 time in total.
Reason: don't post excessive posts, edit old ones!
it isn't what you do that matters but it is how you do it
User avatar
jwalin
Coral
Coral
 
Posts: 438
Joined: Tue Sep 15, 2009 3:43 pm
Location: ahmedabad, gujarat, India


Re: i want information about choromosomes

Postby TheVirus » Sun Apr 11, 2010 3:17 am

sabbi wrote:if we do genetic engeneering in one cell how all body cells start making insulin?????

I know the question's already been answered but i just wanted to highlight this line and make clear just in case, that it's NOT that all cells in our body produce insulin. As it is with all other hormones produced in the human body, each one is produced by a specific gland or organ (in this case, as jwalin pointed out, the pancreas).
”It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.”
~Charles Darwin
User avatar
TheVirus
Coral
Coral
 
Posts: 188
Joined: Sun Nov 01, 2009 4:23 pm

Postby JackBean » Sun Apr 11, 2010 10:15 am

Really? The question was about transformation of (human) cells. So, if I transform them with gene for insulin under control of some constitutive promoter, than only pancreas will produce it?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5678
Joined: Mon Sep 14, 2009 7:12 pm

Postby david23 » Sun Apr 11, 2010 7:39 pm

Sabbi is right, and you better reply to this thread so we know this isn't some homework question. Once you are an adult, the standard gene therapies have this limitation of one cell only, or a few of cells. Assuming the gene insertion succeeds(more often they screw up) there is always the issue of not producing enough insulin just because you only have a few cell active. So does this mean gene therapy sucks, yeah probably, but of course there are now better methods to do these things than just inject someone with a virus and call it a day. Unfortunately, many of them again sucks, but they suck less relatively, and are only in the trial stages.

By the way Jwalin's suggestion is something that has passed clinical trials so far.
david23
Coral
Coral
 
Posts: 430
Joined: Thu May 03, 2007 8:15 am

Re:

Postby TheVirus » Mon Apr 12, 2010 1:38 am

JackBean wrote:Really? The question was about transformation of (human) cells. So, if I transform them with gene for insulin under control of some constitutive promoter, than only pancreas will produce it?

Fine, i guess i'm wrong.
”It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.”
~Charles Darwin
User avatar
TheVirus
Coral
Coral
 
Posts: 188
Joined: Sun Nov 01, 2009 4:23 pm


Return to General Discussion

Who is online

Users browsing this forum: No registered users and 8 guests